Question: The Maurya Empire covered which modern-day countries?
Paraphrase: Which modern-day countries were covered by the Maurya Empire?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P27 wd:Q62943 . ?sbj wdt:P31 wd:Q5 } 
Answer: Pushyamitra Sunga, Chandragupta Maurya, Dasaratha Maurya, Mahinda, Salisuka, Devavarman, Satadhanvan, Sangamitta, Durdhara, Karuvaki, Kunala, Susima, Tishyaraksha, Tivala, Samprati, Padmavati, Charumati, Devi, Vitashoka, Asandhimitra, Ashoka, Chanakya, Brihadratha Maurya